US 2023/0256503 A1 · DIRECT CHILL CAST ALUMINUM INGOT WITH COMPOSITION GRADIENT FOR REDUCED CRACKING

Abstract

Described are methods of preparing compositionally gradient aluminum alloy products. The methods may include casting a composite ingot in a mold. The composite ingot may include an inner region comprising a first aluminum alloy, an outer region surrounding the inner region, and a compositionally gradient zone between the inner region and the outer region. The outer region may include a second aluminum alloy different from the first aluminum alloy. At least one alloying element of the first aluminum alloy may have a content that is decreased through the compositionally gradient zone in a direction from the inner region to the outer region. Also described are aluminum alloy composite ingots and rolled aluminum alloy products having a compositionally gradient zone.

Claims28

Dependent claims

A method of preparing a compositionally gradient aluminum alloy product, comprising:

casting a composite ingot in a mold, the composite ingot including:
an inner region comprising a first aluminum alloy,
an outer region surrounding the inner region, the outer region comprising a second aluminum alloy different from the first aluminum alloy;
and
a compositionally gradient zone between the inner region and the outer region, wherein at least one alloying element of the first aluminum alloy has a content that is decreased through the compositionally gradient zone in a direction from the inner region to the outer region.

2 more elements

Dependencies are inferred from the claim text.

Direct chill cast aluminum ingot with composition gradient for reduced cracking

Life of this patent

Direct chill cast aluminum ingot with composition gradient for reduced cracking

Life of this patent

Abstract

Claims28